Method for radio system resource managment
a radio system and resource management technology, applied in the direction of digital transmission, electrical equipment, network planning, etc., can solve the problems of multiple resources being used for the same information, time-consuming and signaling resources for measurement by the subscriber station on other frequencies, etc., and achieve the effect of intensive resource utilization
Inactive Publication Date: 2006-03-02
COSTA ELENA +3
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Benefits of technology
"The invention provides a method for managing radio resources in a radio communication system, which allows for efficient use of available resources and a distribution of resources to different base stations for specific purposes. The method involves assigning sub-carriers of the radio spectrum to different radio cells in a way that maximizes the use of available resources. The number of radio cells can be at least two, and each cell has a subset of available sub-carriers. The method can be used on an OFDM system and can be implemented using an algorithm to assign sub-carriers to cells based on measured values. The invention also provides a control device in the network that can temporarily assign sub-carriers to cells for the transmission of information. The technical effects of the invention include improved utilization of radio resources, reduced frequency reuse factor, and improved handovers based on measured values."
Problems solved by technology
Measurements by the subscriber station on other frequencies requires time and signaling resources.
The disadvantage of this method is that several resources have to be used for the same information.
Method used
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[0037] Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
[0038] The following example of an embodiment is a cellular OFDM radio communication system, synchronized with regard to time and frequency. A frequency band with a frequency reuse factor of one is used in this case. FIG. 1 is a schematic of an extract from a cellular system of this kind with three hexagonal radio cells. A subscriber station MSn moves along a path {right arrow over (v)}. At its actual stopping point, it receives signals from a first base station BS1, from a second base station BS2 and from a third base station BS3. The subscriber station MSn is actually connected to the third base station BS3 corresponding to its location. The arrows of different thicknesses show the received amplitude of the signals originating from the particular base sta...
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Radio system resource management is provided in a cellular radio communication network like a multiple-carrier network. Information is transmitted on at least one frequency range consisting of a plurality of sub-carriers. The sub-carriers of the frequency range are temporarily made available to each cellular radio for transmitting information. The sub-carriers of the frequency range are temporarily assigned to a given number of cellular radios in such a way that each assigned sub-carrier is made available to a set of the cellular radios for information transmission. In the transmission framework, the assignment of information necessary for a transmission decision reduces the signalling complexity to a single symbol OFDM, thereby reducing interferences and increasing spectrum efficiency.
Description
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is based on and hereby claims priority to European Application No. 02023913.3 filed on 24 Oct. 2002, the contents of which are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The invention relates to a method for radio system resource management in a cellular radio communication system configured as a multiple-carrier network. [0004] 2. Description of the Related Art [0005] In radio communication systems, information (for example voice, image information, video information, SMS (Short Message Service) or other data) is transmitted with the aid of electromagnetic waves via a radio interface between transmitting and receiving stations. The radiation of electromagnetic waves in this case takes place at carrier frequencies that lie within the frequency band provided for the particular system. A radio communication system in this case includes subscriber stations, e.g. mo...
Claims
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IPC IPC(8): H04Q7/20H04L5/02H04W16/02H04W16/12
CPCH04L5/023H04W16/12H04W16/02
Inventor COSTA, ELENAHAAS, HARALDLOTT, MATTHIASSCHULTZ, EGON
Owner COSTA ELENA